Home / 66,485.55-91,758.96-42,288.87

Finding the Fourth Proportional to 66,485.55, 91,758.96 and 42,288.87

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Solution

The fourth proportional to 66,485.55, 91,758.96 and 42,288.87 is: 58,364.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485.55 : 91,758.96 = 42,288.87 : x
  2. Step 2: Convert to fraction form
    66,485.55/91,758.96 = 42,288.87/x
  3. Step 3: Cross multiply
    66,485.55x = 91,758.96 × 42,288.87
  4. Step 4: Simplify right side
    66,485.55x = 3,880,382,730.78
  5. Step 5: Solve for x
    x = 3,880,382,730.78/66,485.55
  6. Step 6: Final answer
    x = 58,364.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.